Sure, you can shoot weddings with primes. In the medium-format film days we did it all the time. But 24mm isn't going to be very useful for most of the ceremony and reception. Perhaps you can use it for group shots and table shots, but you're going to get more use out of your 50, 70-200 and 85.
For general purpose wedding shots I'd much rather have a 24-70/2.8 and a 70-200/2.8, with the 50 and 85 in the bag for formals and the few instances where shallow DOF is needed. A wedding is as much about quantity as quality. If you're constantly needing to switch lenses or reposition to get the framing you need you're going to miss critical opportunities during the reception.
If you want to improve your ability to cover the event invest in a second full-frame body, mount your 24-70 on one and the 70-200 on another, and start saving to upgrade to the 24-70/2.8 in the future.